| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust manifold for internal combustion engine capable of lowering the cost, saving a space and improving functional air assist. SOLUTION: This exhaust manifold is provided with a first member having a recessed cross section, a second member 30 having a recessed cross section and to be combined with the first member so as to form a cylinder head side flange having a hollow part, a pipe 40 as a pipe for port for collecting the exhaust gas from each exhaust port of the cylinder head for discharge and provided with a hole for taking the air at a part corresponding the hollow part among each branch part thereof, and an air leading pipe 50 for leading the air to the hollow part.
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